The level of security for the outgoing file.
Possible ValuesNone (0)
Encrypted And Signed (3)
When sending files, set this value to the level of security for the virtual file to send.
The file will be processed to a temporary file before being sent, and thus the TempPath property is required with encrypting or signing a file.
This is only valid for version 2.0 of the protocol.
This property is not available in the Receiver.